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Caffeinated Coffee Reduces Risk Of Type 2 Diabetes In Women

January 1, 2011: 09:23 AM EST

A study by U.S. researchers has found that caffeinated coffee increases plasma levels of a protein called sex hormone–binding globulin (SHBG) that regulates the biological activity of sex hormones associated with development of type 2 diabetes. For the study, the researchers identified 359 new diabetes cases matched by age and race with 359 apparently healthy controls from 40,000 women enrolled in a large-scale cardiovascular trial. Researchers found that women who drink at least four cups of coffee a day cut their risk of diabetes to less than half that of non-coffee drinkers. Women who also carried the protective copy of the SHBG gene benefited the most from coffee consumption. The protective effect was not found among decaf coffee drinkers.

Goto A, et al. , "Coffee and Caffeine Consumption in Relation to Sex Hormone–Binding Globulin and Risk of Type 2 Diabetes in Postmenopausal Women", Diabetes, January 01, 2011, © American Diabetes Association
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